init wxt framework

src/entrypoints/popup/App.css

@@ -0,0 +1,73 @@
+#root {
+  max-width: 1280px;
+  margin: 0 auto;
+  padding: 2rem;
+  text-align: center;
+}
+
+.logo {
+  height: 6em;
+  padding: 1.5em;
+  will-change: filter;
+  transition: filter 300ms;
+}
+.logo:hover {
+  filter: drop-shadow(0 0 2em #54bc4ae0);
+}
+.logo.react:hover {
+  filter: drop-shadow(0 0 2em #61dafbaa);
+}
+
+@keyframes logo-spin {
+  from {
+    transform: rotate(0deg);
+  }
+  to {
+    transform: rotate(360deg);
+  }
+}
+
+@media (prefers-reduced-motion: no-preference) {
+  a:nth-of-type(2) .logo {
+    animation: logo-spin infinite 20s linear;
+  }
+}
+
+.card {
+  padding: 2em;
+}
+
+.read-the-docs {
+  color: #888;
+}
+
+.popup-container {
+  width: 320px;
+  min-height: 400px;
+  display: flex;
+  flex-direction: column;
+  padding: 0;
+  margin: 0;
+  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, 'Noto Sans', sans-serif;
+}
+
+.popup-header {
+  background-color: #F28B44;
+  color: white;
+  padding: 12px 16px;
+  text-align: center;
+  border-bottom: 1px solid rgba(0, 0, 0, 0.1);
+}
+
+.popup-header h1 {
+  margin: 0;
+  font-size: 18px;
+  font-weight: 500;
+}
+
+.popup-content {
+  flex: 1;
+  padding: 0;
+  background-color: #fff;
+  overflow: auto;
+}